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Rigshospitalet - en del af Københavns Universitetshospital
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Integrated analysis of environmental and genetic influences on cord blood DNA methylation in new-borns

Publikation: Bidrag til tidsskriftTidsskriftartikelForskningpeer review

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  • Major Depressive Disorder Working Group of the Psychiatric Genomics Consortium
  • Thomas Mears Werge (Medlem af forfattergruppering)
  • Thomas Folkmann Hansen
Vis graf over relationer

Epigenetic processes, including DNA methylation (DNAm), are among the mechanisms allowing integration of genetic and environmental factors to shape cellular function. While many studies have investigated either environmental or genetic contributions to DNAm, few have assessed their integrated effects. Here we examine the relative contributions of prenatal environmental factors and genotype on DNA methylation in neonatal blood at variably methylated regions (VMRs) in 4 independent cohorts (overall n = 2365). We use Akaike's information criterion to test which factors best explain variability of methylation in the cohort-specific VMRs: several prenatal environmental factors (E), genotypes in cis (G), or their additive (G + E) or interaction (GxE) effects. Genetic and environmental factors in combination best explain DNAm at the majority of VMRs. The CpGs best explained by either G, G + E or GxE are functionally distinct. The enrichment of genetic variants from GxE models in GWAS for complex disorders supports their importance for disease risk.

OriginalsprogEngelsk
TidsskriftNature Communications
Vol/bind10
Udgave nummer1
Sider (fra-til)2548
ISSN2041-1723
DOI
StatusUdgivet - 11 jun. 2019

ID: 59084457